PTRACK: A particle tracking program for evaluation travel path/travel time uncertainties

Technical Report · Tue Dec 01 04:00:00 EST 1987

OSTI ID:7244001

Thompson, B M; Campbell, J E; Longsine, D E

PTRACK is a model which tracks the path of a radionuclide particle released from a nuclear waste repository into a ground-water flow system in a two-dimensional representation of stratified geologic medium. The code calculates the time required for the particle to travel from the release point (the edge of the disturbed zone) to the specified horizontal or vertical boundary (the accessible environment). The physical properties of the geologic setting and the ground-water flow system can be treated as fixed values or as random variables sampled from their respective probability distributions. In the latter case, PTRACK assigns a sampled value for each parameter and tracks a particle for this trial (realization) of the system. Repeated realizations allow the effects of parameter uncertainty on travel paths/travel times to be quantified. The code can also calculate partial correlation coefficients between dependent variables and independent variables, which are useful in identifying important independent variables. This documentation describes the mathematical basis for the model, the algorithms and solution techniques used, and the computer code design. It also contains a detailed user's manual. The implementation of PTRACK is verified with several systems for which solutions have been calculated by hand. The integration of PTRACK with a Latin hypercube sampling (LHS) code is also discussed, although other sampling methods can be employed in place of LHS. 11 refs., 14 figs., 22 tabs.

• Research Organization: Battelle Memorial Inst., Hereford, TX (USA). Office of Nuclear Waste Isolation; INTERA Technologies, Inc., Houston, TX (USA)
• DOE Contract Number: AC02-87CH10290; AC02-83CH10140
• OSTI ID: 7244001
• Report Number(s): BMI/ONWI/C-93; BMI/ONWI-674; ON: TI88012366
• Country of Publication: United States
• Language: English

Related Subjects

052002* -- Nuclear Fuels-- Waste Disposal & Storage
053000 -- Nuclear Fuels-- Environmental Aspects
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
520300 -- Environment
Aquatic-- Radioactive Materials Monitoring & Transport-- (1989)
54 ENVIRONMENTAL SCIENCES
99 GENERAL AND MISCELLANEOUS
990230 -- Mathematics & Mathematical Models-- (1987-1989)
COMPLIANCE
COMPUTER CODES
DOCUMENT TYPES
ENERGY SOURCES
ENVIRONMENTAL TRANSPORT
FEDERAL REGION VI
FLOW RATE
FUELS
GEOLOGIC DEPOSITS
GROUND WATER
HIGH-LEVEL RADIOACTIVE WASTES
HYDROGEN COMPOUNDS
MANAGEMENT
MANUALS
MASS TRANSFER
MATERIALS
MATHEMATICAL MODELS
NORTH AMERICA
NUCLEAR FACILITIES
NUCLEAR FUELS
OXYGEN COMPOUNDS
P CODES
RADIOACTIVE MATERIALS
RADIOACTIVE WASTE FACILITIES
RADIOACTIVE WASTE MANAGEMENT
RADIOACTIVE WASTES
RADIONUCLIDE MIGRATION
REACTOR MATERIALS
REGULATIONS
SALT DEPOSITS
SITE CHARACTERIZATION
SPENT FUELS
TEXAS
UNDERGROUND DISPOSAL
USA
WASTE DISPOSAL
WASTE MANAGEMENT
WASTES
WATER